[Python] I have developed a HTML form and send a request to Heroku server, but no response and...

I tried to write a HTML program and send a request to heroku server, but no response.

1.) HTML program

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Run Python Program</title>
<script>

async function sendData() {

alert('0');

// const data = {input: document.getElementById('inputField').value}; //

const data = {input: document.getElementById('inputField').value};

alert(data);

alert(JSON.stringify(data));

const response = await fetch('https://test-hui-b40ccd43af5f.herokuapp.com//run', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify(data),
});

alert('2');

const result = await response.json();

document.getElementById('result').innerText = JSON.stringify(result);
}
</script>
</head>
<body>
<h1>Run Python Program</h1>
<input type="text" id="inputField" placeholder="Enter input">
<button onclick="sendData()">Submit</button>
<h2>Result:</h2>
<pre id="result"></pre>
</body>
</html>


python request flasktest.py

# app.py
from flask import Flask, request, jsonify
import os

app = Flask(__name__)

@app.route('/run', methods=['POST'])
def run_program():
data = request.json
# Process the data (e.g., run your Python program)
result = your_python_function(data) # Replace with your function
return jsonify(result)

def your_python_function(data):
# Example processing
return {'message': 'Processing complete', 'input': data}

if __name__ == '__main__':
app.run(host='0.0.0.0', port=int(os.environ.get('PORT', 5000)))


Procfile :
Procfile

requirements.txt
requirements.txt

I have opened the HTML file type in something on input text and press 'Submit' button. no response and checking the log. an error code H10 comes out.

2025-02-25T03:24:17.739378+00:00 heroku\[router\]: at=error code=H10 desc="App crashed" method=OPTIONS path="//run" host=test-hui-b40ccd43af5f.herokuapp.com request_id=7445a6a7-8f08-4683-aab4-a9b97389180a fwd="58.153.66.113" dyno= connect= service= status=503 bytes= protocol=https


I tried to change the script many times and found a lot of help. But no use. Hope someone can help.

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